MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or SEO poisoning attempt. The primary malicious URL, https://ttraff.ru/pify?keyword=bsc+chemistry+question+papers+2020+pdf, is identified as a redirector to malicious infrastructure. The document body, though heavily obfuscated, contains references to academic papers and the malicious URL, reinforcing the lure.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://ttraff.ru/pify?keyword=bsc+chemistry+question+papers+2020+pdf
- http://files.sjcacademy.com/uploads/1/3/0/7/130740142/df8fa.pdf
- http://files.hdskiandmanagement.com/uploads/1/3/1/1/131164488/lodabaj-zoxufiputilo.pdf
- http://files.researchingthewest.com/uploads/1/3/2/8/132814989/212562a5021.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0430/6688/4250/files/3276220707.pdf
- https://cdn.shopify.com/s/files/1/0432/8259/6000/files/8847392853.pdf
- https://cdn.shopify.com/s/files/1/0429/7061/1861/files/23461286793.pdf
- https://cdn.shopify.com/s/files/1/0428/0962/2691/files/53998259403.pdf
- https://cdn.shopify.com/s/files/1/0429/6340/2905/files/22539329221.pdf
- https://cdn.shopify.com/s/files/1/0432/6214/8763/files/861610451.pdf
- https://cdn.shopify.com/s/files/1/0431/8950/2110/files/jalatuvinunawifebutim.pdf
- https://cdn.shopify.com/s/files/1/0430/3280/5527/files/88751313845.pdf
- https://cdn.shopify.com/s/files/1/0432/7168/4252/files/fitekebasapegene.pdf
- https://cdn.shopify.com/s/files/1/0431/6862/8890/files/nizezinukonapexeramudox.pdf
- https://cdn.shopify.com/s/files/1/0429/2732/5343/files/91772188755.pdf
- https://cdn.shopify.com/s/files/1/0435/1338/1028/files/95486437607.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000057cf.bin93d40529ae2643d6b939e3dd85d40aa31398f61138e54ac25b6c1e002caf401d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x57CF | 5912 bytes |
font_01_sfnt_off00006bd0.bin7f1a274bcc42393267cef762f1815296c62f9b35fc195860c9ebcf9865d2788c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6BD0 | 9892 bytes |
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